Hog-tendon cutter



(No Model.)

O. EWING.

HOG TENDON CUTTER. I No. 253.359. Patented Feb. 7,1882.

N. FETHIS Pholmmhognphur. Wuhi C.

UNITED STATES- PATENT OFFICE.

ORVILLE EWING, OF DECATUR, ILLINOIS. I

HOG-TENQON CUTTER.

SPECIFICATION forming part of Letters Patent No. 253,359, dated February7, 1882,

i Q Application filed December 24, 1881. (No model.)

. 0 To all whom it may concern:

Be it known that LORVILLE EWING, a resident of Decatur, in the county ofMacon and State of Illinois, have invented a new and useful Improvementin Instruments for Cutting Tendons in Hogs and other Animals,of whichthe following'is a specification, having reference to the accompanyingdrawings;

My invention relates to an improved instrument principally designed forcutting the tendons of the adductor muscles of the snout in hogs toprevent rooting, the object being to make an incision exposing thetendon, to pick up the tendon, and to cut a pieceout of it at oneoperation and with one tool.

My invention consists in .the combination and adaptation of the variousparts with and to each other, as hereinafter described.

The accompanying drawings illustrate my invention.v

Figure 1 is a side elevation. Fig. 2 is a plan.

Like letters refer to like parts in both figures.

a is a bar of iron or steel, having a loop, I),

formed-at one end, and having secured to the other'end a lance-shapedknife, 0.

I is set at an acute angle with the bar a, as

shown, and its rear portion projectsupward andbackward. The knife hascutting-edges on each of the sides of its triangular or lanceshapedpoint, and also a cutting-edge'at its Said knife ing inclined to the bara at the same angle as the knife 0, so that as the bar cl is slidforward the knivesii out against the back of knife 0, The bar d is movedforward and back ward by the toggle-joint formed by the link I andleverf, which is pivoted to the bar a, as

shown.

The operation ofmy instrument is as follows: The instrument is held inthe right hand, the thumb resting against the curved projection 19, andthe little finger and one next it entering the loop b., The point ofknife 0 is now inserted in the hogs snout, under the adductor tendon, onone side from above, passing downward and outward the tendon israised,an d as the knife is pushed farther forward drops behind the rearend of the knife. ger is now inserted in the loop 8, and, beingeontracted,thesliding bard,carryingthe knives i i, is forced forwardagainst thetendon and back ofknife 0, thus cutting a piece out of thetendon.

ator now clears the instrument from the shout, the sharpened rear edgeof the knife 0 cutting its Way out.

I claim as my invention- The instrument for cutting tendons, consistingof bar a, knife 0, knives i i, sliding bar (1,

and means for forcing said sliding oar forward,

all combined substantially as shown, andfor the purpose set forth. 1

A. slight pull backward by the oper-

